13505443003 has 8 divisors (see below), whose sum is σ = 14569108848. Its totient is φ = 12445317984.

The previous prime is 13505442983. The next prime is 13505443013. The reversal of 13505443003 is 30034450531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13505443003 - 2²¹ = 13503345851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13505443013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877276 + ... + 892537.

It is an arithmetic number, because the mean of its divisors is an integer number (1821138606).

Almost surely, 2^13505443003 is an apocalyptic number.

13505443003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13505443003 is a deficient number, since it is larger than the sum of its proper divisors (1063665845).

13505443003 is a wasteful number, since it uses less digits than its factorization.

13505443003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770413.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 13505443003 its reverse (30034450531), we get a palindrome (43539893534).

The spelling of 13505443003 in words is "thirteen billion, five hundred five million, four hundred forty-three thousand, three".